; 497 
Darst. and Beschr. Pharm. ii. t. 12d; Rehb. Ic. Fl. Germ. t. | a 
Vernac. names. ae fom Bog: utn): Bobi (Manga, 
N. Nigeria, Dudgeon); Ewa Taba (Lagos, Dawodu); Tambae 
(Hadramaut, Disi); ; Phodia (River Shire, Meller r). 
Nupe (Barter, No. 1345, Herb. Kew); Manga, N. Nigeria 
(Dudgeon, No. 60, 1907, Herb. Kew and more or less throughout 
Nigeria. Native of Tropical America and widely cultivated. 
The flowers are used in Northern Nigeria by the natives to stain 
the teeth red (Dudgeon Le.). It is grown as an irrigated crop 
together with '' Gorrko "' chiefly for the flowers s (* fure "); at Uje 
the total yield of tobacco and flower per plant is valued at 10 ratals 
(2d.), at Zoroto, 12 ratals, and in some places the flower is of no 
local value. At Alo a characteristic tobacco plot measuring 112 
square yards contained 209 tobacco plants and 131 ‘‘ Gorrko " 
plants (Thomson, N. Nig. Gaz. 15th July, 1912, Suppl. p. 22), 
but larger plots as at Merguba, containing : 2000 and upwards of 
tobacco plants with about 200 ‘‘ Gorrko’’ plants are sometimes 
grown. 
The seed contains a greenish-yellow oil, yielding by pressure 
9-10 per cent. and by extraction 30-32 per cent., with strong 
drying powers (Hooper, Agric. Ledger, No. 5, 1911-12, p. 157). 
Nicotine is an alkaloid extracted from the refuse of tobacco 
ited i goat ef en midribs of the leaves; those of the 
TVIT and '' Kentucky " varieties being regarded as the 
best ce thé. purpose. It is an important horticultural insecticide, 
and the principal constituent of some sheep-dips. It is produced 
in the manufactories of this country under the supervision of the 
Inland Revenue sericis the officials also oe to the 
and the best results were obtained by leavi ina 6 Te per e 
with 20,000 plants to the hectare and fertilising with 300 kilog. 
of sodium nitrate per hectare, but this plot yielded only 156 kilog. 
of Nicotine (Bull. Bur. Agric. Intellig. Rome, Jan. 1911, p. 107). 
In every case it was found that the Benet s Nicotine was con- 
Snuff and ‘‘ Tobacco Geis Insecticide” is igs manufactured 
from the refuse of tobacco manufactori 
